[jira] [Created] (MESOS-1871) Sending SIGTERM to a task command may render it orphaned

["Alexander Rukletsov (JIRA)" <ji...@apache.org>]

Alexander Rukletsov created MESOS-1871:
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             Summary: Sending SIGTERM to a task command may render it orphaned
                 Key: MESOS-1871
                 URL: https://issues.apache.org/jira/browse/MESOS-1871
             Project: Mesos
          Issue Type: Bug
          Components: slave
            Reporter: Alexander Rukletsov


{{CommandExecutor}} launches tasks wrapping them into {{sh -c}}. That means signals are sent to the top process—that is {{sh -c}}—and not to the task directly. Though {{SIGTERM}} is propagated by {{sh -c}} down the process tree, if the task is unresponsive to {{SIGTERM}}, {{sh -c}} terminates reporting success to the {{CommandExecutor}}, rendering the task detached from the parent process and still running. Because the {{CommandExecutor}} thinks the command terminated normally, its OS process exits normally and may not trigger containerizer's escalation which destroys cgroups.

Here is the test related to this issue: [https://gist.github.com/rukletsov/3f19ecc7389fa51e65c0]. As expected, it fails on Linux, but surprisingly, it works on Mac OS 10.9.4.



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